Hello Codeforces!

We are looking for problems for the Southeast Asia Team Selection Test (SEATST) 2027.

We welcome tasks of all difficulty levels and formats, but we'd especially appreciate submissions of non-batch tasks, such as interactive, communication, and output-only problems. These can be particularly challenging to design and prepare, and we'd love to see more of them!

Important information:

• Deadline: 31 January 2027, 23:59 (GMT+8)
• Reward: USD 500 for each problem used in SEATST 2027, with an additional USD 200 for non-batch problems and up to USD 300 for authors who assist with problem preparation.

More details, including task guidelines and submission instructions, can be found on the SEATST website.

We look forward to seeing your submissions!

SEATST 2027 Scientific Committee